AR-10 / .308 (7.62×51) barrels for large-frame builds — DPMS-pattern fitment. 4150 chrome-moly-vanadium steel with a nitride finish or stainless, in rifle lengths, with a 5/8×24 muzzle thread.

AR-10 / .308 Barrels

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Choosing an AR-10 / .308 Barrel

Barrel length and gas system

.308 barrels are typically 16–20"; match the gas system length to the barrel. Longer barrels favor velocity and long-range performance; 16" keeps it maneuverable.

Twist rate

1:10 is standard and stabilizes common .308 bullet weights.

Pattern and thread

DPMS-pattern fitment — match to a DPMS-style .308 upper. Muzzle thread is 5/8x24. Stainless options favor accuracy for precision builds.

Frequently Asked Questions

Are these DPMS or Armalite pattern?

DPMS-pattern. Match the barrel to a DPMS-style .308 upper and components.

What thread pitch are these?

5/8x24.

Do you need an FFL to buy a barrel?

No — a barrel ships without an FFL.